Final answer:
The correct answer is sagittal section, which is a vertical plane that divides the body or an organ into right and left sides.
Step-by-step explanation:
The correct answer is a) sagittal section. A sagittal section is a vertical plane that divides the body or an organ into right and left sides. If the vertical plane runs directly down the middle of the body, it is called the midsagittal or median plane. If it divides the body into unequal right and left sides, it is called a parasagittal plane.